Spectropolarimetry of NGC 1275 reveals a narrow-line radio galaxy with polarization parallel to its radio jet axis

Open Access

Table 1.

Emission line (rest-frame air wavelengths) properties.

Feature	Peak intensity (arb.)	FWHM (km s⁻¹)
Hγ (4340 Å)	(0.093 ± 0.002) ^(a)	(1980 ± 38) ^(a)
Hβ (4861 Å)	0.189 ± 0.002	1314 ± 21
[O III] (4959 Å)	0.214 ± 0.001	1280 ± 19
[O III] (5007 Å)	0.625 ± 0.004	1257 ± 7
[N I] (5200 Å)	0.053 ± 0.002	541 ± 24
[N II] (5755 Å)	(0.030 ± 0.002) ^(b)	(898 ± 54) ^(b)
He I (5876 Å)	0.019 ± 0.001	955 ± 293
[O I] (6300 Å)	0.357 ± 0.003	854 ± 7
[O I] (6364 Å)	0.117 ± 0.001	860 ± 12
[N II] (6548 Å)	0.203 ± 0.002	916 ± 1
Hα (6563 Å)	0.736 ± 0.007	1136 ± 10
[N II] (6583 Å)	0.622 ± 0.008	686 ± 9
[S II] (6716 Å)	0.202 ± 0.004	516 ± 13
[S II] (6731 Å)	0.286 ± 0.004	459 ± 13

Notes.

^(a)

Likely contaminated by [O III] 4363 Å;

^(b)

Possible blend with [Fe VII] 5720 Å. The spectrum was normalized to the peak (strongest line) before continuum subtraction.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.